Acoustics

Acoustics is the study of all mechanical waves in gases, liquids and solids. These mechanical waves can include vibrations, sound, ultrasound and infrasound. A scientist which works in the field of acoustics is called an acoustician. Someone working in the field of acoustic technology may be called an acoustical engineer.

Hearing is one of the most crucial means of survival in the animal world. Speech is one of the most distinctive characteristics of human development and culture. The science of acoustics affects many facets of human society. The fields can range from music, medicine to architecture and industrial production.

Acoustics revolves around the generation, propagation and reception of mechanical waves and vibrations. Any acoustical event or process has five main steps. These steps include cause, generating mechanism (transduction), acoustic wave propagation, reception (transduction) and effect.

Physicists and acoustic engineers discuss sound pressure levels in terms of frequencies. This is based on how our ears interpret sound. What vertebrates experience as higher or lower pitch sounds are pressure vibrations having a high or lower number of systems per sound.

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Internal Structure of the Earth

How can scientists determine the internal structure of the Earth if they can't actually go there? The depth of the deepest mines and wells on Earth is only a tiny fraction of the earth's diameter. Describe one of the methods used to determine the inner structure of the Earth. Could similar methods be used on the planet Mars? How

Reverberation Mechanism in Buildings and Applications to Life

Write a note on the reverberation mechanism in buildings and its applications in our daily life.

Introduction to Wind Instruments

(See attached file for full problem description) --- Introduction to Wind Instruments The physics of wind instruments is based on the concept of standing waves. When the player blows into the mouthpiece, the column of air inside the instrument vibrates, and standing waves are produced. Although the acoustics of wind instr

Matlab: Filling the Acoustic Neuromata

I have a matlab code for a skull filled with solid water and i want to put air at the places of acoustic neuromata i.e. in the sinus region and near the ears (and the rest of skull will remain as it is i.e. filled with with solid water). I am not too sure how to approach this though. Please see the attached documents: One contai

Oscilloscope and Frequencies

1. How can Lissajous patterns be used in checking out specific frequencies (such as in tuning a piano)? 2. What makes the sound of a violin different from that of a piano when they are playing the same note? 3. Can the wavelength of a signal be measured on an oscilloscope? Explain.

Harmonic Sound Waves

4. Two coherent sources of sound, A and B, emit continuous harmonic sound waves of the same frequency f and wavelength lambda. When each source is operating by itself, with the others turned off, it produces an acoustic intensity at point P equal to 1.00 W/m^2. The paths from the sources to P are not equal. You are given

Sound Waves

1. Picture a long row of standing dominos, one a little behind the other so that knocking over the first will knock over the second and so on. Now imagine an idealized tube an inch or two in diameter extending from New York to California. Suppose this tube is filled with greased, essentially frictionless marbles and you push one